Catholic Encyclopedia (1913)
	Aachen - Assize of Clarendon
Aachen - Agapetae	Agapetus - Alvarez de Paz	St. Alypius - Antipope	Archdiocese of Antivari - Assize of Clarendon
List of Contributors List of Illustrations Aachen Aaron Abaddon Abandonment Pedro Abarca Abarim Abba Antoine d'Abbadie Abban Abbé Jean Baptiste Abbeloos Abbess Abbey Abbo Cernuus St. Abbon Abbot Henry Abbot Methods of Abbreviation Ecclesiastical Abbreviations Abbreviators Abdera Abdias Abdias of Babylon Abdication Sts. Abdon and Sennen Abduction Abecedaria Abecedarians Abel (1) Abel (2) Peter Abelard Louis Abelly Abenakis Abraham-ben-Méir Aben-Ezra Inscription of Abercius John Abercromby Robert Abercromby Diocese of Aberdeen University of Aberdeen Moritz von Aberle Legend of Abgar Abiathar Abila Abbey of Abingdon Thomas Abington Missions among the Abipones Abisai Abjuration Abo Abner Abomination of Desolation Abortion Physical Effects of Abortion Charles François d'Abra de Raconis Don Isaac Abrabanel Abraham Abraham (in Liturgy) Bosom of Abraham Abraham a Sancta Clara Abraham Ecchelensis Abrahamites Nicholas Abram Abrasax Absalom Absalon of Lund Absinthe Absolute Absolution Abstemii Abstinence Physical Effects of Abstinence Abstraction Abthain Theodore Abucara Abundius Abydus Abyss Abyssinia Acacia Acacians Acacius, Bishop of Beroea Acacius, Bishop of Caesarea Acacius, Patriarch of Constantinople St. Acacius Roman Academies French Academy Acadia Acanthus (see) Acanthus (plant) Acathistus St. Acca Accaron Accentus Ecclesiasticus Acceptance Acceptants Accession Accessus Acciajuoli Accident Acclamation Acclamation (in Papal Elections) Biblical Accommodation Accomplice Francesco Accursius Acephali Archdiocese of Acerenza Achab Achaia Achaicus Achaz Lucas d'Achéry Achiacharus Achimaas Achimelech Achitopel Diocese of Achonry Achor Valley Achrida Johann Heinrich Achterfeldt Theodore William Achtermann Valens Acidalius Diocese of Aci-Reale Leopold Ackermann Acmonia Acoemetae Acolouthia Acolyte Joaquín Acosta José de Acosta Diocese of Acquapendente Acquaviva Claudius Acquaviva Diocese of Acqui Acre Acrostic Acta Pilati Acta Sanctæ Sedis Acta Sanctorum Hiberniæ Acta Triadis Thaumaturgæ Act of Settlement (Irish) Charles Januarius Acton John Acton John Emerich Edward Dalberg Acton, Baron Acton John Francis Edward Acton Canonical Acts Human Acts Indifferent Acts Acts of the Apostles Acts of Roman Congregations Actus et Potentia Actus primus Actus Purus Acuas St. Adalard Adalbert Adalbert I St. Adalbert (of Bohemia) St. Adalbert (of Germany) Ad Apostolicae Dignitatis Apicem Ad Limina Apostolorum Ad Sanctam Beati Petri Sedem Ad Universalis Ecclesiae Adam Adam in Early Christian Liturgy and Literature Books of Adam Adam of Bremen Adam of Fulda Adam of Murimuth Adam of Perseigne Adam of St. Victor Adam of Usk John Adam Nicholas Adam Adam Scotus Andrea Adami da Bolsena Adamites St. Adamnan James Adams Ven. John Adams Diocese of Adana Adar Ferdinando d'Adda Addas Liturgy of Addeus and Maris Ecclesiastical Addresses Archdiocese of Adelaide St. Adelaide, Abbess St. Adelaide (Adelheid) John Placid Adelham Adelmann Adelophagi Vicariate Apostolic of Aden Adeodatus Pope St. Adeodatus Adeste Fideles Adjuration Administrator Administrator (of Ecclesiastical Property) Canonical Admonitions Admont St. Ado of Vienne Adonai Adonias Adoption Canonical Adoption Supernatural Adoption Adoptionism Adoration Perpetual Adoration Francis Adorno Adoro Te Devote Diocese of Adria Pope Adrian I Pope Adrian II Pope St. Adrian III Pope Adrian IV Pope Adrian V Pope Adrian VI St. Adrian of Canterbury Adrian of Castello Adrianople Christian Kruik van Adrichem Adso Diego Francisco Aduarte Adullam Adulteration of Food Adultery Advent Adventists Book of Advertisements Advocates of Roman Congregations Advocates of St. Peter Advocatus Diaboli Advocatus Ecclesiæ Advowson Adytum St. Aedan of Ferns Aedh of Kildare Bl. Aegidius of Assisi Ægidius of Viterbo Aelfric, Abbot of Eynsham Ælnoth St. Ælred Æneas of Gaza St. Aengus (the Culdee) Ænon Æons Aër Aërius of Pontus Æsthetics Æterni Patris (Pius IX) Æterni Patris (Leo XIII) Aëtius Affinity (in the Bible) Affinity (in Canon Law) Affirmation Afflighem Denis Auguste Affre St. Afra Africa Early African Church African Liturgy African Synods Agabus Agape Agapetae	Agapetus Pope St. Agapetus I Pope Agapetus II William Seth Agar St. Agatha Agathangelus Agathias Pope St. Agatho Agaunum Agostini Agazzari Council of Agde Canonical Age Age of Reason Diocese of Agen Agents of Roman Congregations Aggeus (Haggai) Unjust Aggressor Raymond d'Agiles St. Agilulfus Agios O Theos Giuseppe Agnelli Fra Guglielmo Agnelli Bl. Agnellus of Pisa Andreas Agnellus of Ravenna St. Agnes of Assisi Bl. Agnes of Bohemia St. Agnes of Montepulciano St. Agnes of Rome Maria Gaetana Agnesi Agnetz Agnoetae Agnosticism Agnus Dei Agnus Dei (in Liturgy) Agonistici Agony of Christ Paolo Agostini Bl. Agostino Novello Charles Constance César Joseph Matthieu d'Agoult Archdiocese of Agra Agram Agrapha Agrarianism Maria de Agreda Agria St. Agricius Alexander Agricola George Agricola Rudolph Agricola Heinrich Cornelius Agrippa of Nettesheim Agrippinus Diocese of Aguas Calientes Joseph Saenz de Aguirre Ahicam Ahriman and Ormuzd Johann Caspar Aiblinger Gregor Aichinger St. Aidan of Lindisfarne Duchess of Aiguillon Mary Aikenhead St. Ailbe St. Aileran Family of d'Ailleboust Pierre d'Ailly Mateo Aimerich Diocese of Aire Giacomo Maria Airoli Aisle Aistulph Archdiocese of Aix Councils of Aix-en-Provence Diocese of Ajaccio Akhmin Michael and Nicetas Akominatos Alabama Alabanda Alabaster Diocese of Alagoas Pietro Alagona Alain de l'Isle Alalis Lucas Alaman Niccolò Alamanni Alan of Tewkesbury Alan of Walsingham Alanus de Rupe Alaska Diocese of Alatri Alb Diocese of Alba Pompeia St. Alban Albanenses Albania Albani Albano Diocese of Albany Diocese of Albenga Niccolo Albergati Alberic of Monte Cassino Alberic of Ostia Albero de Montreuil Giulio Alberoni Albert Albert II Bl. Albert St. Albert Bl. Albert Berdini of Sarteano Albert of Aachen Albert of Brandenburg Albert of Castile Albert of Stade Leandro Alberti Leone Battista Alberti Nicolò Albertini John Baptist Albertrandi Bl. Albertus Magnus Archdiocese of Albi Council of Albi Juan de Albi Sigismund Albicus Albigenses Albinus Johann G. Albrechtsberger Albright Brethren Afonzo de Albuquerque University of Alcalá Military Order of Alcántara Antonio de Alcedo Alchemy St. Alcmund Andrea Alciati Alcimus John Alcock Alcoholism Alcuin St. Aldegundis Aldersbach Aldfrith St. Aldhelm St. Aldric Ulissi Aldrovandi Leonard Alea Phillipe Alegambe Francisco Xavier Alegre Joseph Sadoc Alemany Giulio Alenio Archdiocese of Aleppo Diocese of Ales and Terralba Diocese of Alessandria della Paglia Galeazzo Alessi Diocese of Alessio Alexander Alexander (Early Bishops) Pope St. Alexander I Pope Alexander II Pope Alexander III Pope Alexander IV Pope Alexander V Pope Alexander VI Pope Alexander VII Pope Alexander VIII St. Alexander St. Alexander (II) St. Alexander (of Alexandria) Bl. Alexander Briant Alexander Natalis Alexander of Abonoteichos Alexander of Hales Alexander of Lycopolis Bl. Alexander Sauli Dom Jacques Alexandre Alexandria Councils of Alexandria Church of Alexandria Diocese of Alexandria Alexandrian Library Alexandrine Liturgy Alexian Nuns Alexians St. Alexis Falconieri St. Alexius Count Vittorio Alfieri Pietro Alfieri Alfonso de Zamora Alfonso of Burgos Michael Alford Alfred the Great St. Alfrida St. Alfwold Alger of Liége Diocese of Alghero Archdiocese of Algiers Algonquins Diocese of Alife Alimentation Alimony Aliturgical Days All Hallows College All Saints All Souls' Day Allah Diocese of Allahabad Paul Allard Leo Allatius Joseph Allegranza Antonio Allegri Gregorio Allegri Alleluia Jean Allemand Edward Patrick Allen Frances Allen George Allen John Allen (I) John Allen (II) William Allen August Allerstein Thomas William Allies Joseph Franz Allioli William Allison Allocution Allori William Allot Claude Allouez Alma Alma Redemptoris Mater Diego de Almagro John Almeida Diocese of Almeria Camillo Almici Ven. John Almond John Almond Oliver Almond Alms and Almsgiving St. Alnoth Alogi St. Aloysius Gonzaga A and Ω Alpha and Omega (in Jewish Theology) Christian Use of the Alphabet St. Alphonsus Liguori St. Alphonsus Rodriguez Prospero Alpini Alsace-Lorraine Diego Francisco Altamirano Altamura and Acquaviva Altar (in Liturgy) Altar (in the Greek Church) Altar (in Scripture) History of the Christian Altar Bl. Altmann St. Alto Diocese of Alton Diocese of Altoona Altruism Alumnus Niccolò Alunno Fernando Alvarez de Toledo, Duke of Alva Pedro d'Alva y Astorga Alonzo de Alvarado Fray Francisco de Alvarado Pedro de Alvarado Balthazar Alvarez Diego Alvarez Manoel Alvarez Alvarez de Paz	St. Alypius José Antonio Alzate Johann Baptist Alzog Ama Giovanni Antonio Amadeo Dioceses of Amadia and Akra Amalarius of Metz St. Amalberga (1) St. Amalberga (2) Amalec Archdiocese of Amalfi Amalricians Amalricus Augerii St. Amandus Amasia Amastris Thaddeus Amat Amathus Diocese of Amazones Peter Ambarach Ambition Ambo Ambo (in the Russian and Greek Church) George d'Amboise Our Lady of Ambronay August Wilhelm Ambros St. Ambrose St. Ambrose of Camaldoli Bl. Ambrose of Sienna Ambrosian Basilica Ambrosian Chant Ambrosian Hymnography Ambrosian Library Ambrosian Liturgy and Rite Ambrosians Ambrosiaster Ambulatory Diocese of Amelia Denis Amelote Amen Amende Honorable Veit Amerbach America Pre-Columbian Discovery of America American College in Rome American College at Louvain South American College American Protective Association Francis Kerril Amherst Ven. John Amias Amice Antonio Amico Francesco Amico Diocese of Amida Diocese of Amiens Joseph Maria Amiot Amisus Daniel Ammen St. Ammon Ammon Ammonian Sections Ammonites Amorbach Amorios Amorrhites Eusebius Amort Amos Amovibility Vicariate Apostolic of Amoy André Marie Ampère Amphilochius of Iconium Amphilochius of Sida Amphoræ Abbey of Ampleforth Ampullæ Diocese of Ampurias Amra Amrah Amraphel Amsterdam Amulet Use and Abuse of Amulets Amyclae Jacques Amyot Anabaptists Pope St. Anacletus Anacletus II Anæsthesia Diocese of Anagni Analogy Analysis Anaphora Anarchy St. Anastasia Anastasiopolis St. Anastasius (1) Pope St. Anastasius I Pope Anastasius II Pope Anastasius III Pope Anastasius IV St. Anastasius (2) St. Anastasius Sinaita Anathema Anathoth St. Anatolia St. Anatolius (1) St. Anatolius (2) Anatomy Anazarbus Pedro de Añazco Joseph Anchieta Anchor Anchorites Ancient of Days Ancilla Dei Ciriaco d'Ancona Diocese of Ancona and Umana Ancren Riwle Ancyra Councils of Ancyra Andalusia William Henry Anderdon Anthony Maria Anderledy Henry James Anderson Lionel Albert Anderson Patrick Anderson James Anderton Ven. Robert Anderton Roger Anderton Thomas Anderton Heinrich Bernhard, Freiherr von Andlaw Ven. William Andleby Alonso Andrada Antonio de Andrada Diego Andrada de Payva Bernard André Yves Marie André Giovanni d'Andrea Bl. Andrea Dotti Andrea Pisano Andreas of Ratisbon Felix de Andreis Juan Andres St. Andrew (1) St. Andrew (2) St. Andrew Avellino Bl. Andrew Bobola St. Andrew Corsini Andrew of Caesarea St. Andrew of Crete Andrew of Lonjumeau Andrew of Rhodes St. Andrew the Scot William Eusebius Andrews Diocese of Andria Anemurium Felice Anerio Giovanni Francesco Anerio Filippo Anfossi Ange de Saint Joseph Ange de Sainte Rosalie Angel St. Angela Merici Bl. Angela of Foligno Francesco degli Angeli Girolamo degli Angeli Angelicals Fra Angelico Bl. Angelo Carletti di Chivasso Angelo Clareno da Cingoli Early Christian Representations of Angels Angels of the Churches Angelus Angelus Bell Angelus Silesius Anger Diocese of Angers University of Angers Notre Dame des Anges St. Angilbert Francesco Angiolini Priory of Anglesea Anglican Orders Anglicanism Timothy Warren Anglin Anglo-Saxon Church Anglona-Tursi Angola and Congo Diocese of Angora Diocese of Angoulême Diocese of Angra Pedro Angulo Vicariate Apostolic of Anhalt Pope St. Anicetus College and Church of the Anima (in Rome) Anima Christi Animals in Christian Art Animals in the Bible Animism Giovanni Animuccia Anise Anna Anna Comnena Ecclesiastical Annals Annas François Annat Annates St. Anne Sainte Anne d'Auray Sainte Anne de Beaupré Diocese of Annecy Joseph Annegarn Annibale d'Annibaldi Giuseppe d'Annibale Annius of Viterbo St. Anno Annunciation of the Blessed Virgin Mary Feast of the Annunciation of the Blessed Virgin Mary Orders of the Annunciation Louis-Pierre Anquetil Casto Innocenzio Ansaldi Giordano Ansaloni St. Anschar Councils of Anse Ansegisus St. Ansegisus St. Anselm (1) St. Anselm (2) Anselm of Laon Anselm of Liège St. Anselm of Lucca, the Younger Antoine Anselme Reyer Anslo Thomas Chisholm Anstey Antediluvians Pope St. Anterus Joseph Anthelmi Anthemius St. Anthony Orders of Saint Anthony St. Anthony of Padua Anthony of Sienna Anthony of the Mother of God Anthropomorphism Antichrist Antidicomarianites Antidoron Diocese of Antigonish Antimensium Antinoe Antinomianism Church of Antioch Antioch Antiochene Liturgy Antiochus of Palestine Antipater of Bostra Antipatris Antiphellos Antiphon Antiphon (in the Greek Church) Antiphon (in Greek Liturgy) Antiphonary Gregorian Antiphonary Antipodes Antipope	Archdiocese of Antivari Vicariate Apostolic of Antofogaste Paul Gabriel Antoine Anton Ulrich Giacomo Antonelli Leonardo Antonelli Nicolò Maria Antonelli Giovanni Antoniano Silvio Antoniano Charles Antoniewicz St. Antoninus Antoninus Pius St. Antonio Maria Zaccaria Maria Antonio of Vicenza Antonius Franz Joseph Antony Antwerp Fray Domingo de la Anunciación Fray Juan de la Anunciación Diocese of Aosta Apaches Apameia Antonio Aparisi y Guijarro Apelles St. Aphian Aphraates Apiarius of Sicca Apocalypse Apocatastasis Apocrisiarius Apocrypha Apodosis Apollinarianism St. Apollinaris (1) St. Apollinaris (2) Apollinaris (the Elder) St. Apollinaris Claudius St. Apollonia Apollonius of Ephesus Apologetics Apolysis Apolytikion Apophthegmata Patrum Ferrante Aporti Apostasy Apostle (in Liturgy) Apostle Spoons Apostles Apostles' Creed Twelve Apostles of Erin Apostleship of Prayer Apostolic Camera Apostolic Churches Apostolic Church-Ordinance Apostolic Constitutions Apostolic Fathers Apostolic Letters Apostolic Majesty Apostolic See Apostolic Succession Apostolic Union of Secular Priests Apostolicae Curae Apostolicae Sedis Moderationi Apostolicæ Servitutis Apostolici Apostolici Ministerii Apostolici Regiminis Apostolicity Apostolicum Pascendi Munus Apotactics Apotheosis Apparitor Appeal as from an abuse Appeals Appetite Approbation Appropriation Apse Apse Chapel Apsidiole Council of Apt Aquarians Archdiocese of Aquila Aquila and Priscilla Aquileia Councils of Aquileia Diocese of Aquino, Sora, and Pontecorvo Arabia Vicariate Apostolic of Arabia Councils of Arabia Arabian School of Philosophy Arabici Arabissus Arad Monastic School of Aran Council of Aranda Philip Aranda Arason Jón Arator Prefecture Apostolic of Araucania Araucanians Antonio de Araujo Francisco de Araujo Arawaks Ignacio de Arbieto Arbitration St. Arbogast Abbey of Arbroath Missal of Arbuthnott Arca Our Lady of Arcachon Jacob Arcadelt Arcadiopolis Arcae Arcanum Arch Commission of Sacred Archæology Archange de Lyon Archbishop Archconfraternity Archdeacon Richard Archdeacon Archdiocese Archelais James Archer Court of Arches Archiereus Archimandrite Filippo Archinto Ecclesiastical Archives Archontics Archpriest Arcosolium Arculf Diocese of Ardagh Ardbraccan Priory of Ardchattan Edward Arden Notre Dame des Ardilliers Prince Charles d'Aremberg Areopagus Areopolis Diocese of Arequipa Arethas of Caesarea Arethusa Faustino Arévalo Rodríguez Sanchez de Arévalo Diocese of Arezzo Pierre de Voyer d'Argenson Argentine Republic Charles du Plessis d'Argentré Argos Luis Antonio Argüello Diocese of Argyll and the Isles John Argyropulos St. Arialdo Arianism Diocese of Ariano Francis Arias Pedro Arias de Avila Benedictus Arias Montanus Ariassus Aribo Arindela Ludovico Ariosto Aristeas Aristides Aristotle Arius Arizona Ark Arkansas Fray José Arlegui Synods of Arles Spanish Armada Archdiocese of Armagh Book of Armagh School of Armagh Georges d'Armagnac Mariano Armellino Armenia Armenierstadt Fray Nicolás Armentia Diocese of Armidale Arminianism Arnauld Thomas Augustine Arne Arni Thorlaksson Arnobius Arnold Arnold of Brescia Alberto Arnoldi Bartholomäus Arnoldi Arnolfo di Cambio Peter Joseph Arnoudt Veit Arnpeck Arnulf of Bavaria Arnulf of Lisieux St. Arnulf of Metz Diocese of Arras Councils of Arras Pablo José Arriaga Juan Arricivita Nicola Arrighetti Nicolò Arrighetti Arsacidæ Arsenius Autorianos St. Arsenius Arsinoe Artemon James Arthur Thomas Arthur Articles of Faith Organic Articles Artoklasia Bachelor of Arts Faculty of Arts Master of Arts Seven Liberal Arts Artvin Thomas Arundel Thomas Arundell St. Asaph Ascalon Ascelin Ascendente Domino Ascension Feast of the Ascension Asceticism Joseph, Ritter von Aschbach Diocese of Ascoli-Piceno Diocese of Ascoli, Satriano, and Cirignola Aseity Aseneth Aser Asgaard Ash Wednesday George Ashby Thomas Ashby Ashes Ven. Ralph Ashley John Ashton Ven. Roger Ashton Asia Asia Minor Asiongaber Robert Aske Asmodeus Aspendus Asperges Martin Aspilcueta The Ass (in Caricature of Christian Beliefs and Practices) Prefecture Apostolic of Assam Assemani Assemblies of the French Clergy John Asser Feast of Asses Assessor of the Holy Office Assessors St. Assicus Assideans Physiological Assimilation Psychological Assimilation Diocese of Assisi Assistant at the Pontifical Throne Assize of Clarendon

Catholic Encyclopedia (1913)

Aachen - Assize of Clarendon

Aachen - Agapetae

Agapetus - Alvarez de Paz

St. Alypius - Antipope

Archdiocese of Antivari - Assize of Clarendon

List of Contributors
List of Illustrations

Aachen
Aaron
Abaddon
Abandonment
Pedro Abarca
Abarim
Abba
Antoine d'Abbadie
Abban
Abbé
Jean Baptiste Abbeloos
Abbess
Abbey
Abbo Cernuus
St. Abbon
Abbot
Henry Abbot
Methods of Abbreviation
Ecclesiastical Abbreviations
Abbreviators
Abdera
Abdias
Abdias of Babylon
Abdication
Sts. Abdon and Sennen
Abduction
Abecedaria
Abecedarians
Abel (1)
Abel (2)
Peter Abelard
Louis Abelly
Abenakis
Abraham-ben-Méir Aben-Ezra
Inscription of Abercius
John Abercromby
Robert Abercromby
Diocese of Aberdeen
University of Aberdeen
Moritz von Aberle
Legend of Abgar
Abiathar
Abila
Abbey of Abingdon
Thomas Abington
Missions among the Abipones
Abisai
Abjuration
Abo
Abner
Abomination of Desolation
Abortion
Physical Effects of Abortion
Charles François d'Abra de Raconis
Don Isaac Abrabanel
Abraham
Abraham (in Liturgy)
Bosom of Abraham
Abraham a Sancta Clara
Abraham Ecchelensis
Abrahamites
Nicholas Abram
Abrasax
Absalom
Absalon of Lund
Absinthe
Absolute
Absolution
Abstemii
Abstinence
Physical Effects of Abstinence
Abstraction
Abthain
Theodore Abucara
Abundius
Abydus
Abyss
Abyssinia
Acacia
Acacians
Acacius, Bishop of Beroea
Acacius, Bishop of Caesarea
Acacius, Patriarch of Constantinople
St. Acacius
Roman Academies
French Academy
Acadia
Acanthus (see)
Acanthus (plant)
Acathistus
St. Acca
Accaron
Accentus Ecclesiasticus
Acceptance
Acceptants
Accession
Accessus
Acciajuoli
Accident
Acclamation
Acclamation (in Papal Elections)
Biblical Accommodation
Accomplice
Francesco Accursius
Acephali
Archdiocese of Acerenza
Achab
Achaia
Achaicus
Achaz
Lucas d'Achéry
Achiacharus
Achimaas
Achimelech
Achitopel
Diocese of Achonry
Achor Valley
Achrida
Johann Heinrich Achterfeldt
Theodore William Achtermann
Valens Acidalius
Diocese of Aci-Reale
Leopold Ackermann
Acmonia
Acoemetae
Acolouthia
Acolyte
Joaquín Acosta
José de Acosta
Diocese of Acquapendente
Acquaviva
Claudius Acquaviva
Diocese of Acqui
Acre
Acrostic
Acta Pilati
Acta Sanctæ Sedis
Acta Sanctorum Hiberniæ
Acta Triadis Thaumaturgæ
Act of Settlement (Irish)
Charles Januarius Acton
John Acton
John Emerich Edward Dalberg Acton, Baron Acton
John Francis Edward Acton
Canonical Acts
Human Acts
Indifferent Acts
Acts of the Apostles
Acts of Roman Congregations
Actus et Potentia
Actus primus
Actus Purus
Acuas
St. Adalard
Adalbert
Adalbert I
St. Adalbert (of Bohemia)
St. Adalbert (of Germany)
Ad Apostolicae Dignitatis Apicem
Ad Limina Apostolorum
Ad Sanctam Beati Petri Sedem
Ad Universalis Ecclesiae
Adam
Adam in Early Christian Liturgy and Literature
Books of Adam
Adam of Bremen
Adam of Fulda
Adam of Murimuth
Adam of Perseigne
Adam of St. Victor
Adam of Usk
John Adam
Nicholas Adam
Adam Scotus
Andrea Adami da Bolsena
Adamites
St. Adamnan
James Adams
Ven. John Adams
Diocese of Adana
Adar
Ferdinando d'Adda
Addas
Liturgy of Addeus and Maris
Ecclesiastical Addresses
Archdiocese of Adelaide
St. Adelaide, Abbess
St. Adelaide (Adelheid)
John Placid Adelham
Adelmann
Adelophagi
Vicariate Apostolic of Aden
Adeodatus
Pope St. Adeodatus
Adeste Fideles
Adjuration
Administrator
Administrator (of Ecclesiastical Property)
Canonical Admonitions
Admont
St. Ado of Vienne
Adonai
Adonias
Adoption
Canonical Adoption
Supernatural Adoption
Adoptionism
Adoration
Perpetual Adoration
Francis Adorno
Adoro Te Devote
Diocese of Adria
Pope Adrian I
Pope Adrian II
Pope St. Adrian III
Pope Adrian IV
Pope Adrian V
Pope Adrian VI
St. Adrian of Canterbury
Adrian of Castello
Adrianople
Christian Kruik van Adrichem
Adso
Diego Francisco Aduarte
Adullam
Adulteration of Food
Adultery
Advent
Adventists
Book of Advertisements
Advocates of Roman Congregations
Advocates of St. Peter
Advocatus Diaboli
Advocatus Ecclesiæ
Advowson
Adytum
St. Aedan of Ferns
Aedh of Kildare
Bl. Aegidius of Assisi
Ægidius of Viterbo
Aelfric, Abbot of Eynsham
Ælnoth
St. Ælred
Æneas of Gaza
St. Aengus (the Culdee)
Ænon
Æons
Aër
Aërius of Pontus
Æsthetics
Æterni Patris (Pius IX)
Æterni Patris (Leo XIII)
Aëtius
Affinity (in the Bible)
Affinity (in Canon Law)
Affirmation
Afflighem
Denis Auguste Affre
St. Afra
Africa
Early African Church
African Liturgy
African Synods
Agabus
Agape
Agapetae

Agapetus
Pope St. Agapetus I
Pope Agapetus II
William Seth Agar
St. Agatha
Agathangelus
Agathias
Pope St. Agatho
Agaunum
Agostini Agazzari
Council of Agde
Canonical Age
Age of Reason
Diocese of Agen
Agents of Roman Congregations
Aggeus (Haggai)
Unjust Aggressor
Raymond d'Agiles
St. Agilulfus
Agios O Theos
Giuseppe Agnelli
Fra Guglielmo Agnelli
Bl. Agnellus of Pisa
Andreas Agnellus of Ravenna
St. Agnes of Assisi
Bl. Agnes of Bohemia
St. Agnes of Montepulciano
St. Agnes of Rome
Maria Gaetana Agnesi
Agnetz
Agnoetae
Agnosticism
Agnus Dei
Agnus Dei (in Liturgy)
Agonistici
Agony of Christ
Paolo Agostini
Bl. Agostino Novello
Charles Constance César Joseph Matthieu d'Agoult
Archdiocese of Agra
Agram
Agrapha
Agrarianism
Maria de Agreda
Agria
St. Agricius
Alexander Agricola
George Agricola
Rudolph Agricola
Heinrich Cornelius Agrippa of Nettesheim
Agrippinus
Diocese of Aguas Calientes
Joseph Saenz de Aguirre
Ahicam
Ahriman and Ormuzd
Johann Caspar Aiblinger
Gregor Aichinger
St. Aidan of Lindisfarne
Duchess of Aiguillon
Mary Aikenhead
St. Ailbe
St. Aileran
Family of d'Ailleboust
Pierre d'Ailly
Mateo Aimerich
Diocese of Aire
Giacomo Maria Airoli
Aisle
Aistulph
Archdiocese of Aix
Councils of Aix-en-Provence
Diocese of Ajaccio
Akhmin
Michael and Nicetas Akominatos
Alabama
Alabanda
Alabaster
Diocese of Alagoas
Pietro Alagona
Alain de l'Isle
Alalis
Lucas Alaman
Niccolò Alamanni
Alan of Tewkesbury
Alan of Walsingham
Alanus de Rupe
Alaska
Diocese of Alatri
Alb
Diocese of Alba Pompeia
St. Alban
Albanenses
Albania
Albani
Albano
Diocese of Albany
Diocese of Albenga
Niccolo Albergati
Alberic of Monte Cassino
Alberic of Ostia
Albero de Montreuil
Giulio Alberoni
Albert
Albert II
Bl. Albert
St. Albert
Bl. Albert Berdini of Sarteano
Albert of Aachen
Albert of Brandenburg
Albert of Castile
Albert of Stade
Leandro Alberti
Leone Battista Alberti
Nicolò Albertini
John Baptist Albertrandi
Bl. Albertus Magnus
Archdiocese of Albi
Council of Albi
Juan de Albi
Sigismund Albicus
Albigenses
Albinus
Johann G. Albrechtsberger
Albright Brethren
Afonzo de Albuquerque
University of Alcalá
Military Order of Alcántara
Antonio de Alcedo
Alchemy
St. Alcmund
Andrea Alciati
Alcimus
John Alcock
Alcoholism
Alcuin
St. Aldegundis
Aldersbach
Aldfrith
St. Aldhelm
St. Aldric
Ulissi Aldrovandi
Leonard Alea
Phillipe Alegambe
Francisco Xavier Alegre
Joseph Sadoc Alemany
Giulio Alenio
Archdiocese of Aleppo
Diocese of Ales and Terralba
Diocese of Alessandria della Paglia
Galeazzo Alessi
Diocese of Alessio
Alexander
Alexander (Early Bishops)
Pope St. Alexander I
Pope Alexander II
Pope Alexander III
Pope Alexander IV
Pope Alexander V
Pope Alexander VI
Pope Alexander VII
Pope Alexander VIII
St. Alexander
St. Alexander (II)
St. Alexander (of Alexandria)
Bl. Alexander Briant
Alexander Natalis
Alexander of Abonoteichos
Alexander of Hales
Alexander of Lycopolis
Bl. Alexander Sauli
Dom Jacques Alexandre
Alexandria
Councils of Alexandria
Church of Alexandria
Diocese of Alexandria
Alexandrian Library
Alexandrine Liturgy
Alexian Nuns
Alexians
St. Alexis Falconieri
St. Alexius
Count Vittorio Alfieri
Pietro Alfieri
Alfonso de Zamora
Alfonso of Burgos
Michael Alford
Alfred the Great
St. Alfrida
St. Alfwold
Alger of Liége
Diocese of Alghero
Archdiocese of Algiers
Algonquins
Diocese of Alife
Alimentation
Alimony
Aliturgical Days
All Hallows College
All Saints
All Souls' Day
Allah
Diocese of Allahabad
Paul Allard
Leo Allatius
Joseph Allegranza
Antonio Allegri
Gregorio Allegri
Alleluia
Jean Allemand
Edward Patrick Allen
Frances Allen
George Allen
John Allen (I)
John Allen (II)
William Allen
August Allerstein
Thomas William Allies
Joseph Franz Allioli
William Allison
Allocution
Allori
William Allot
Claude Allouez
Alma
Alma Redemptoris Mater
Diego de Almagro
John Almeida
Diocese of Almeria
Camillo Almici
Ven. John Almond
John Almond
Oliver Almond
Alms and Almsgiving
St. Alnoth
Alogi
St. Aloysius Gonzaga
A and Ω
Alpha and Omega (in Jewish Theology)
Christian Use of the Alphabet
St. Alphonsus Liguori
St. Alphonsus Rodriguez
Prospero Alpini
Alsace-Lorraine
Diego Francisco Altamirano
Altamura and Acquaviva
Altar (in Liturgy)
Altar (in the Greek Church)
Altar (in Scripture)
History of the Christian Altar
Bl. Altmann
St. Alto
Diocese of Alton
Diocese of Altoona
Altruism
Alumnus
Niccolò Alunno
Fernando Alvarez de Toledo, Duke of Alva
Pedro d'Alva y Astorga
Alonzo de Alvarado
Fray Francisco de Alvarado
Pedro de Alvarado
Balthazar Alvarez
Diego Alvarez
Manoel Alvarez
Alvarez de Paz

St. Alypius
José Antonio Alzate
Johann Baptist Alzog
Ama
Giovanni Antonio Amadeo
Dioceses of Amadia and Akra
Amalarius of Metz
St. Amalberga (1)
St. Amalberga (2)
Amalec
Archdiocese of Amalfi
Amalricians
Amalricus Augerii
St. Amandus
Amasia
Amastris
Thaddeus Amat
Amathus
Diocese of Amazones
Peter Ambarach
Ambition
Ambo
Ambo (in the Russian and Greek Church)
George d'Amboise
Our Lady of Ambronay
August Wilhelm Ambros
St. Ambrose
St. Ambrose of Camaldoli
Bl. Ambrose of Sienna
Ambrosian Basilica
Ambrosian Chant
Ambrosian Hymnography
Ambrosian Library
Ambrosian Liturgy and Rite
Ambrosians
Ambrosiaster
Ambulatory
Diocese of Amelia
Denis Amelote
Amen
Amende Honorable
Veit Amerbach
America
Pre-Columbian Discovery of America
American College in Rome
American College at Louvain
South American College
American Protective Association
Francis Kerril Amherst
Ven. John Amias
Amice
Antonio Amico
Francesco Amico
Diocese of Amida
Diocese of Amiens
Joseph Maria Amiot
Amisus
Daniel Ammen
St. Ammon
Ammon
Ammonian Sections
Ammonites
Amorbach
Amorios
Amorrhites
Eusebius Amort
Amos
Amovibility
Vicariate Apostolic of Amoy
André Marie Ampère
Amphilochius of Iconium
Amphilochius of Sida
Amphoræ
Abbey of Ampleforth
Ampullæ
Diocese of Ampurias
Amra
Amrah
Amraphel
Amsterdam
Amulet
Use and Abuse of Amulets
Amyclae
Jacques Amyot
Anabaptists
Pope St. Anacletus
Anacletus II
Anæsthesia
Diocese of Anagni
Analogy
Analysis
Anaphora
Anarchy
St. Anastasia
Anastasiopolis
St. Anastasius (1)
Pope St. Anastasius I
Pope Anastasius II
Pope Anastasius III
Pope Anastasius IV
St. Anastasius (2)
St. Anastasius Sinaita
Anathema
Anathoth
St. Anatolia
St. Anatolius (1)
St. Anatolius (2)
Anatomy
Anazarbus
Pedro de Añazco
Joseph Anchieta
Anchor
Anchorites
Ancient of Days
Ancilla Dei
Ciriaco d'Ancona
Diocese of Ancona and Umana
Ancren Riwle
Ancyra
Councils of Ancyra
Andalusia
William Henry Anderdon
Anthony Maria Anderledy
Henry James Anderson
Lionel Albert Anderson
Patrick Anderson
James Anderton
Ven. Robert Anderton
Roger Anderton
Thomas Anderton
Heinrich Bernhard, Freiherr von Andlaw
Ven. William Andleby
Alonso Andrada
Antonio de Andrada
Diego Andrada de Payva
Bernard André
Yves Marie André
Giovanni d'Andrea
Bl. Andrea Dotti
Andrea Pisano
Andreas of Ratisbon
Felix de Andreis
Juan Andres
St. Andrew (1)
St. Andrew (2)
St. Andrew Avellino
Bl. Andrew Bobola
St. Andrew Corsini
Andrew of Caesarea
St. Andrew of Crete
Andrew of Lonjumeau
Andrew of Rhodes
St. Andrew the Scot
William Eusebius Andrews
Diocese of Andria
Anemurium
Felice Anerio
Giovanni Francesco Anerio
Filippo Anfossi
Ange de Saint Joseph
Ange de Sainte Rosalie
Angel
St. Angela Merici
Bl. Angela of Foligno
Francesco degli Angeli
Girolamo degli Angeli
Angelicals
Fra Angelico
Bl. Angelo Carletti di Chivasso
Angelo Clareno da Cingoli
Early Christian Representations of Angels
Angels of the Churches
Angelus
Angelus Bell
Angelus Silesius
Anger
Diocese of Angers
University of Angers
Notre Dame des Anges
St. Angilbert
Francesco Angiolini
Priory of Anglesea
Anglican Orders
Anglicanism
Timothy Warren Anglin
Anglo-Saxon Church
Anglona-Tursi
Angola and Congo
Diocese of Angora
Diocese of Angoulême
Diocese of Angra
Pedro Angulo
Vicariate Apostolic of Anhalt
Pope St. Anicetus
College and Church of the Anima (in Rome)
Anima Christi
Animals in Christian Art
Animals in the Bible
Animism
Giovanni Animuccia
Anise
Anna
Anna Comnena
Ecclesiastical Annals
Annas
François Annat
Annates
St. Anne
Sainte Anne d'Auray
Sainte Anne de Beaupré
Diocese of Annecy
Joseph Annegarn
Annibale d'Annibaldi
Giuseppe d'Annibale
Annius of Viterbo
St. Anno
Annunciation of the Blessed Virgin Mary
Feast of the Annunciation of the Blessed Virgin Mary
Orders of the Annunciation
Louis-Pierre Anquetil
Casto Innocenzio Ansaldi
Giordano Ansaloni
St. Anschar
Councils of Anse
Ansegisus
St. Ansegisus
St. Anselm (1)
St. Anselm (2)
Anselm of Laon
Anselm of Liège
St. Anselm of Lucca, the Younger
Antoine Anselme
Reyer Anslo
Thomas Chisholm Anstey
Antediluvians
Pope St. Anterus
Joseph Anthelmi
Anthemius
St. Anthony
Orders of Saint Anthony
St. Anthony of Padua
Anthony of Sienna
Anthony of the Mother of God
Anthropomorphism
Antichrist
Antidicomarianites
Antidoron
Diocese of Antigonish
Antimensium
Antinoe
Antinomianism
Church of Antioch
Antioch
Antiochene Liturgy
Antiochus of Palestine
Antipater of Bostra
Antipatris
Antiphellos
Antiphon
Antiphon (in the Greek Church)
Antiphon (in Greek Liturgy)
Antiphonary
Gregorian Antiphonary
Antipodes
Antipope

Archdiocese of Antivari
Vicariate Apostolic of Antofogaste
Paul Gabriel Antoine
Anton Ulrich
Giacomo Antonelli
Leonardo Antonelli
Nicolò Maria Antonelli
Giovanni Antoniano
Silvio Antoniano
Charles Antoniewicz
St. Antoninus
Antoninus Pius
St. Antonio Maria Zaccaria
Maria Antonio of Vicenza
Antonius
Franz Joseph Antony
Antwerp
Fray Domingo de la Anunciación
Fray Juan de la Anunciación
Diocese of Aosta
Apaches
Apameia
Antonio Aparisi y Guijarro
Apelles
St. Aphian
Aphraates
Apiarius of Sicca
Apocalypse
Apocatastasis
Apocrisiarius
Apocrypha
Apodosis
Apollinarianism
St. Apollinaris (1)
St. Apollinaris (2)
Apollinaris (the Elder)
St. Apollinaris Claudius
St. Apollonia
Apollonius of Ephesus
Apologetics
Apolysis
Apolytikion
Apophthegmata Patrum
Ferrante Aporti
Apostasy
Apostle (in Liturgy)
Apostle Spoons
Apostles
Apostles' Creed
Twelve Apostles of Erin
Apostleship of Prayer
Apostolic Camera
Apostolic Churches
Apostolic Church-Ordinance
Apostolic Constitutions
Apostolic Fathers
Apostolic Letters
Apostolic Majesty
Apostolic See
Apostolic Succession
Apostolic Union of Secular Priests
Apostolicae Curae
Apostolicae Sedis Moderationi
Apostolicæ Servitutis
Apostolici
Apostolici Ministerii
Apostolici Regiminis
Apostolicity
Apostolicum Pascendi Munus
Apotactics
Apotheosis
Apparitor
Appeal as from an abuse
Appeals
Appetite
Approbation
Appropriation
Apse
Apse Chapel
Apsidiole
Council of Apt
Aquarians
Archdiocese of Aquila
Aquila and Priscilla
Aquileia
Councils of Aquileia
Diocese of Aquino, Sora, and Pontecorvo
Arabia
Vicariate Apostolic of Arabia
Councils of Arabia
Arabian School of Philosophy
Arabici
Arabissus
Arad
Monastic School of Aran
Council of Aranda
Philip Aranda
Arason Jón
Arator
Prefecture Apostolic of Araucania
Araucanians
Antonio de Araujo
Francisco de Araujo
Arawaks
Ignacio de Arbieto
Arbitration
St. Arbogast
Abbey of Arbroath
Missal of Arbuthnott
Arca
Our Lady of Arcachon
Jacob Arcadelt
Arcadiopolis
Arcae
Arcanum
Arch
Commission of Sacred Archæology
Archange de Lyon
Archbishop
Archconfraternity
Archdeacon
Richard Archdeacon
Archdiocese
Archelais
James Archer
Court of Arches
Archiereus
Archimandrite
Filippo Archinto
Ecclesiastical Archives
Archontics
Archpriest
Arcosolium
Arculf
Diocese of Ardagh
Ardbraccan
Priory of Ardchattan
Edward Arden
Notre Dame des Ardilliers
Prince Charles d'Aremberg
Areopagus
Areopolis
Diocese of Arequipa
Arethas of Caesarea
Arethusa
Faustino Arévalo
Rodríguez Sanchez de Arévalo
Diocese of Arezzo
Pierre de Voyer d'Argenson
Argentine Republic
Charles du Plessis d'Argentré
Argos
Luis Antonio Argüello
Diocese of Argyll and the Isles
John Argyropulos
St. Arialdo
Arianism
Diocese of Ariano
Francis Arias
Pedro Arias de Avila
Benedictus Arias Montanus
Ariassus
Aribo
Arindela
Ludovico Ariosto
Aristeas
Aristides
Aristotle
Arius
Arizona
Ark
Arkansas
Fray José Arlegui
Synods of Arles
Spanish Armada
Archdiocese of Armagh
Book of Armagh
School of Armagh
Georges d'Armagnac
Mariano Armellino
Armenia
Armenierstadt
Fray Nicolás Armentia
Diocese of Armidale
Arminianism
Arnauld
Thomas Augustine Arne
Arni Thorlaksson
Arnobius
Arnold
Arnold of Brescia
Alberto Arnoldi
Bartholomäus Arnoldi
Arnolfo di Cambio
Peter Joseph Arnoudt
Veit Arnpeck
Arnulf of Bavaria
Arnulf of Lisieux
St. Arnulf of Metz
Diocese of Arras
Councils of Arras
Pablo José Arriaga
Juan Arricivita
Nicola Arrighetti
Nicolò Arrighetti
Arsacidæ
Arsenius Autorianos
St. Arsenius
Arsinoe
Artemon
James Arthur
Thomas Arthur
Articles of Faith
Organic Articles
Artoklasia
Bachelor of Arts
Faculty of Arts
Master of Arts
Seven Liberal Arts
Artvin
Thomas Arundel
Thomas Arundell
St. Asaph
Ascalon
Ascelin
Ascendente Domino
Ascension
Feast of the Ascension
Asceticism
Joseph, Ritter von Aschbach
Diocese of Ascoli-Piceno
Diocese of Ascoli, Satriano, and Cirignola
Aseity
Aseneth
Aser
Asgaard
Ash Wednesday
George Ashby
Thomas Ashby
Ashes
Ven. Ralph Ashley
John Ashton
Ven. Roger Ashton
Asia
Asia Minor
Asiongaber
Robert Aske
Asmodeus
Aspendus
Asperges
Martin Aspilcueta
The Ass (in Caricature of Christian Beliefs and Practices)
Prefecture Apostolic of Assam
Assemani
Assemblies of the French Clergy
John Asser
Feast of Asses
Assessor of the Holy Office
Assessors
St. Assicus
Assideans
Physiological Assimilation
Psychological Assimilation
Diocese of Assisi
Assistant at the Pontifical Throne
Assize of Clarendon